Magazine pencil



March 2 1926.

J. E. PLATN MAGAZINE PENCI L Filed MaFCh l5 1924 Patented Mar. 2, 1926.

Y UNITED STATES PATENT OFFICE.

, JOHN ERIK rLA'roN, or JQNKPING, SWEDEN.

IvIAefAzInn PENCIL. y

Application led March 15, 1924. lSerial No. 699,515.

To all 'whom it may concern.'

Be 1t known that I, JoIIN ERIK PLAToN,

a subject of the King of Sweden,.and resi;

` such magazine pencils using interchangeable leads, pieces of aniline or'the 1ike,`in which the lead is advanced Vby means of a needle or the like to the point of the pencil, from a magazine which is formed by a tube detachable from the other parts of the pencil.

. The invention is illustrated by the accompanying drawing in which Fig. 1 is an enlarged view showing a longitudinal section of the entire pencil. Fig. 2 is a section on the line 2-2 of Fig. 1. Figs. 3. and 4 show a side view and an end view respectively of a detail. Figs. '5 and 6 show other details, Fig. 5 being a side view of the parts of the pencil which are inside the tube seen in a position at right angles to the position shown in Fig. 1, and Fig. 6 being a side view of one end of the magazine tube. Fig. 7 is a side view of the pencil with the magazine tube partly pushed on and Fig. 8 is a section on the line 8-8 of Fig. 7.

, All the figures with the exception of Fig.V

1 showthe pencil in enlarged size.

Referring to the drawing in detail they numeral 1 indicates the magazine casing, 2

the tip for the lead and 3 a neck extending from the tip andadapted to be inserted into" the casing 1. Said neck is planed sideways in such manner, that a chamber is formed between said planed surface andthe tube wall, which chamber at its rear end is limited by a shoulder 15 in the neck, see Figs. 1 and 7. In the bottom of the chamber, i; e. in the planed surface is made as usual a groove L which merges into the channel, leading to the tip of the pencil through which channel the leads are forced forwards to the tip by means of the needle 6. The needle 6 is also here surrounded by a protecting tube 16. For the moving backwards and forwards of the needle the pencil is according to this invention arranged in the following manner.

The protecting tube 16 is surrounded by a tube 2O rotatable on the former. The tube 2O is threaded on its inner surface and in the threads catches af fastening 21 for the needle; Said fastening which ofcourse maybe exchanged for a member formed directly out of the needle, is movable `in and guided by a longitudinal groove 22 in the protect` ing tube,.so that the needle may be moved backwards and forwards by rotating the intermediate internally threaded* tube 20 in relation to the pencil. This rotation is suitably done by means of a button 23 (see Figs. 3, 4) which is so arranged thatitis rotatable andV removable in the rear end of the magazine casing tube, where it is con! nected to the intermediate tube 20. Said tube is retained on the protecting tube by any suitable device for instance by a screw 251 screwed. into the rear part of the protecting tube, ,the head of said scr-ew catching into an enlargedv part of the intermediate tube abutting against a shoulder in this member (see Figs. 2 and 5). The bottom17 of the magazine tube, known from earlier devices, is here fastenedto the intermediate tube 20. In order to bring the button 23 into engagement with the intermediate tube, the rear end of said tube is provided in this embodiment with two ovpposite slots 25, Fig. 2, for a transverse pin 2G or the like at the inner end 27 of the button 23, which end is tube-shaped and intended to be .inserted into the magazine tube-see Fig. 4, which Ashows the button seen from the inner end. Forthe fastening ofthe button in the magazine tube 1 this isfprovided with forinstance one, two or more .warts 28 arranged tocatch into a' peripheral groove inthe tube 27. The end of the button having been inserted into the magazine tube the warts are broughtfinto engagement with the groove by means of the button being pressed gently, and by rotating it .simultaneously the pin 2G is brought into engagement with the slots 25 of the intermediate tube.

The button 23 or a corresponding mem-L ber may of course be connected to the intermediate tube 20 in many different ways, and the device may besides be altered in many ways within the scope of the invention.

The invention refers further to an improved device for the fastening of the tip member 2 in the tube 1. The manner in which said device is arranged is shown .in Figs. 5 and 6. The tube 1 is provided with another pin or wart 30 turned inwards and intended to catch into a groove 31 running in Fig.v 7 the wart 30 ent-ers the groove 32 by a slight turning of the tube 1 in relation to the tip 2.y or vice versa. The tip 2 being in its position in the tube 1 it is locked by an -automatic lock. Said lock may for eX- ample consist of a flatY spring 33 Asunk yin to and fastened to the neck, which spring is provided with a projection or a bend 34, which ma;v snap into a longitudinal slot 35 in the tube. Then the tip is to be loosened, the spring is pressed down, preterably by the nail, and the tube is for that purpose provided with a slot 36 crossing the other. The tip is thereafter turned in relation to `the tube until the .pin or wart 30 comes opposite the groove 32, and then the tip and the tube may be brought apart.

For the insertion of the leads into the chamber between the planed surface of the neck and the wall of the tube 1 the shoulder 15 is provided 4with anopening 40. (Fig. 8). Through Saidopening each lead may slide into the chamber when vthe opening is turned downwards. r According to this invention the opening maybe shut in order to prevent that on one side the leads crowd together inthe chamber and on ,the other side that a lead which has entered the chamber, slides back into the magazine. `For this reason the tube wall is provided with a wart 41 turned inwards and pressed out iromfthe material, .which wart :may either be situated vright in Jfront of or Von the side of the shoulder. Said wart closes the opening 40, whenthetip2 is locked in the tube 1'by means of the spring34. Vhen a leadl is yto .be inserted in the chamber, the wart 'is moved to the side by the tip 2 and the tube 1 being rot-ated slightly in relation to each other, the spring 34having been pushed inwards, and thereby the wart,` if `situated right in iiront of the shoulder, enters a groove 42 running entirely o r partly round the inner end of vthe tip.

Such an arrangement, that the opening 40 or a corresponding opening for the same purpose is p rovidd with a closing'devi-ce, which is independent ofthe position of the tube in relation to the tip 2 of the lead, falls naturally within the scope of the invention and does not 'meet any technical diiculties.

Having now described my invention, what I claim as' new and desire to secure by Letters Patent is: i

1. A magazine pencil of the character described and v comprising in combination a magazine member, a lead holding and guid ing vtip member, said tip member having a neck ,atits butt end and adapted to be held in the forward end of the magazine section, `a lead ejecting kneedle for advancing Vthe lead .from the magazine, to the tip, and meansl 'for locking the ytip member in the magazine member, said lmeans comprising an internal teat Vvor proj ection at the forward end of the magazine member, the neck of the tip having a peripheral groove adapted to be'normally ,engaged by said teat, and a lock means for `lecking said tip member against turning in relation to the magazine member when in proper position therein. i

A magazine pencil, according to vclaim 1 3andivherein thetip-locking means consists ott akfiat spring carried by the neck of the tip member, anda longitudinal slot in the magazine member, said spring ladapted to snap kinto said slot, and to be disengaged therefrom by external pressure.

'3. A magazine pencil according to claim 1 characterized by the neck of the tip memberliaying va chamber formed between the neck and the magazine, and by means for shutting Ioff Said chamber from vthe maga- Zine. .e

4. A magazine pencil accordingto claim 1, characterizedby the neck or' the tip ymem-` ber being provided with a chamber land means for Ashutting O rsaid chamber from thel magazine, said means comprising a flange forming a )vallbetween the chamber andthe magazine, said wall having a passage for inserting `the leads into the niagazine,the magazine havingan internal `projection, saidA ,passage adapted to be closed by `said projection said projection being brought into and out of closing position by rotation of the tip member relatively to .the magazine.

VIn .witness whereof, I have hereunto signed e my name..

1 JOHN Eni- K PLATON. 

